Biosorption of copper (II) onto immobilized cells of Pycnoporus sanguineus from aqueous solution: equilibrium and kinetic studies.
Biosorption of copper (II) onto immobilized cells of Pycnoporus sanguineus from aqueous solution: equilibrium and kinetic studies.
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DOI：
10.1016/j.jhazmat.2008.03.104
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发表时间：
2009-01
影响因子：
13.6
通讯作者：
Y. Yahaya;Mashitah Mat Don;S. Bhatia
中科院分区：
文献类型：
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作者：
Y. Yahaya;Mashitah Mat Don;S. Bhatia
在间歇体系中研究了白腐菌对水溶液中铜离子的吸附能力。将活菌细胞固定在海藻酸钙凝胶中，研究了pH值、初始金属离子浓度、菌量和温度对其吸附性能的影响。吸附平衡数据符合Langmuir模型、Redlich-Peterson模型和Freundlich模型。吸附动力学符合准二级扩散方程和颗粒内扩散方程。根据生物吸附平衡数据确定了吸附热力学参数：热变(10.16kJ/mol)和熵变(33.78J/molk)。FTIR分析表明，固定化细胞对Cu2+的吸附过程中涉及了OH、NH、CH、CO、COOH和CN等基团。固定化细胞对水溶液中的铜离子有一定的去除能力。
The ability of white-rot fungus, Pycnoporus sanguineus to adsorb copper (II) ions from aqueous solution is investigated in a batch system. The live fungus cells were immobilized into Ca-alginate gel to study the influence of pH, initial metal ions concentration, biomass loading and temperature on the biosorption capacity. The optimum uptake of Cu (II) ions was observed at pH 5 with a value of 2.76mg/g. Biosorption equilibrium data were best described by Langmuir isotherm model followed by Redlich–Peterson and Freundlich models, respectively. The biosorption kinetics followed the pseudo-second order and intraparticle diffusion equations. The thermodynamic parameters enthalpy change (10.16kJ/mol) and entropy change (33.78J/molK) were determined from the biosorption equilibrium data. The FTIR analysis showed that OH, NH, CH, CO, COOH and CN groups were involved in the biosorption of Cu (II) ions onto immobilized cells of P. sanguineus. The immobilized cells of P. sanguineus were capable of removing Cu (II) ions from aqueous solution.